Kit Pistone e Cilindro Maggiorato - Yamaha FS1- ED 1975

Increases engine capacity to 60cc (43mm bore). Requires standard gasket set & small end bearing, (available separately). Carburettor may need rejet to get the best from Kit. *Please note* Increased Performance can put additional strain on aged components. Licensing , Registration and Insurance may be affected (depending on country).